Lifting-jack.



PATENTBD SEPT. 1, 1903.

3. L. AD'AIR. LIFTING JACK. APPLIUATION FILED JAN. 14, 1903.

N0 MODEL.

UITED STATES Patented September 1, 1903.

PATENT OFFICE.

DENJIMAN LOCKET'I ADAIR, OF DALLAS, TEXAS, ASSIGNOR OF ONE-HALF TO XVILLIAM WETTEROTII, OF DALLAS, TEXAS.

LlFTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 737,891, dated September 1, 1903. Application filed January 14,1903. Serial No. 139,083. (No model.)

To (I/ZZ whmrb it may concern.-

Be it known that I, BENJIMAN LocKErT ADAIR, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Lifting Jacks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in lifting-jacks.

The object of my invention is the construction of a device which can be quickly placed beneath the axle of a vehicle and easily removed therefrom.

My invention further consists in the combination of parts and novel construction, is hereinafter more fully described, illustrated in the accompanying; drawings, and more particularly pointed out in the claims hereunto appended.

In the accompanying drawings, Figure 1 is a perspective view of the lifting-j ack; and Fig.

2 is a side elevation of the same, showing it in dotted lines in practical operation.

Like numerals of reference indicate corresponding parts throughout both of the drawmgs.

In the drawings, 1 designatesalifting-standard, and 2 is a supporting-standard having stepped notches 9 at its upper end. Said standard is pivotally secured to the liftingstanding 1, near its base, by means of a suitable link or plate 3. An adjustable lever 4 is detachably secured to the lifting-standard 1 by a suitable means. Apertures 5 are vertically arranged upon the lifting-standard 1 for permitting of the adjustment of said lever 4:. The lever at is provided with a guide arm or plate 6, which is permanently secured thereto at one side thereof. The supporting-standard 2 is adapted to swing within the guide 6, and said guide retains the standard 2 in approximatelya parallel position to the lifting-standard 1. To facilitate the operation of the lever a, I have provided a series of corrugations or notches 1O thereon at its lifting or engaging end. The lever-lis provided with a suitable grip S, and the supporting-standard has a grip 11 at its upper end. A reduced portion or grip '7 is formed upon the lifting-standard 1. In application the operator grasps the grip or reduced portion 7 of the standard 1 and places the said standard near the axle which is to be raised. The notched end of the adj ustable lever 4 is brought to bear against the 1111- der partof the axle and pressure is applied to the grip 8, and thereby forcing the aXle upward to any desired height the supportingstandard is swung forward and .one end of its step-like notches 9 is brought into engagement with the axle. The lever 4- is then pivoted out of engagement upon its fulcrum, and the axle is retained in a fixed position upon one of the step-notches of the supportingstandard 2,

Changes in the form, proportions, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is i 1. A lifting-jackcomprising a lifting-standard, a lifting-lever fulcrumed thereon, and a supporting-standard independent of said 1ever to receive the article lifted and support it, substantially as described. I

2. A lifting-jack comprising a lifting-standard, a lever fulcrumed thereon, a supportingstandard p'ivotally connected with the said lifting-standard and cooperating with the lifting-leverbut independent thereof for holding an article in the position to which it has been raised by the said lever, substantially as described.

Alifting-jackcomprisingalifting-standard, a lever carried thereby, a supportingstandard, independent of the said lever and linked to said lifting-standard and provided with stepped notches upon its upper end for receiving articles lifted by the lever and supporting them, substantially as described.

4. A lifting-jack comprising a standard, a lever pivoted thereto, a second standard connected with the first standard by a link, and independent of the lever, means carried by the lever for guiding the movement of the second standard, the second standard bein arranged to receive and support the Weight of the article lifted by the" lever, substantially as described.

5. A lifting-j ack comprising a lifting-standard, a link or plate pivotally secured at one notches or stepped portions upon its lifting end, a supporting-standard mounted in suitable relation to the lifting-standard, a link connecting the lower end of the supportingstandard with the lifting-standard, the upper end of the said supporting-standard being provided With a series of supporting-steps and a loop carried by the lifting-lever and inclosing the supporting-standard for holding it in proper position, the supporting-standard receiving theweight of the article lifted from the lifting-lever, substantially as described.

In testimony whereof I hereunto affix my signature in presence of two Witnesses.

BENJIMAN LOOKETT ADAlR.

lVitnesses:

BENNETT HILL, CLARENCE MARION ELMORE. 

